code: def register(cls):
      super().register()
      cls.equality_type_funcs[Image] = cls.compare_dataset
      cls.equality_type_funcs[Points] = cls.compare_dataset
      cls.equality_type_funcs[LineContours] = cls.compare_dataset
      cls.equality_type_funcs[FilledContours] = cls.compare_dataset
      cls.equality_type_funcs[WindBarbs] = cls.compare_dataset
      return cls.equality_type_funcs
  
file_path: geoviews/geoviews/element/comparison.py
imports: from unittest import TestCase
  from holoviews.element.comparison import Comparison
  from .geo import Image, Points, LineContours, FilledContours, WindBarbs
label_desc: Use image node_id 1 for calling the Comparison obj's underlying member method code with example usage: obj.register(cls) and returns: cls